baber/WOPTO huggingface dataset:
Patent GB-1367244-A (GB)
Title: Amplifier gain control
IPC: H03G3/10
Filed: 1972-01-10
Abstract: 1367244 Gain control; colour television THORN ELECTRICAL INDUSTRIES Ltd 27 Dec 1972 [10 Jan 1972] 1108/72 Headings H3T and H4F An amplifier in which the gain can be varied without a corresponding variation in the D.C. level of the output comprises a transistor 20 with signal input applied to its base 21 and having a collector load resistor 26, the output being at terminal 27. The emitter circuit comprises a resistor 28 connected to the slider of a potentiometer 31, one end of which is connected to earth via a resistor 32 and the other to a point of fixed bias potential. In the embodiment shown the source of bias potential comprises a Zener diode 38 connected to a source of fixed potential 36 via resistor 37, so that temperature compensation is provided for the characteristics of the transistor 20. The arrangement is more particularly intended for use in setting up correctly the grey scale in a colour television receiver using a triple beam tube.
Patent GB-996530-A (GB)
Title: Improvements in or relating to fastening devices for equipment for parachutes and parachutists
IPC: B64D17/52
Filed: 1963-01-10
Abstract: 996,530. Hook fastenings; stud and socket fastenings. T. W. WILLIAMS. Jan. 8, 1964 [Jan. 10, 1963], No. 1130/63. Headings E2A and E2B. [Also in Division F2] A fastening device for a parachute or a parachutist is held in the fastening position by a pin, clip or similar device and is provided with an electro magnet which keeps the fastening device in the fastening position after the pin, clip or similar device is removed and so long as the electro magnet is energized. In one embodiment, Fig. 2, the device comprises a winding 23 which is mounted on an inner flap of a parachute pack and carries a stud 20, and a plate 27 of material of high magnetic permeability attached to an outer flap of the pack and held in position by a pin 19 to secure the pack when the parachutist is in the aircraft. When the parachutist leaves the aircraft a normally open switch 26 is closed to allow current to flow to the winding 23 to produce a magnetic field which retains the plate 27. A line 18 withdraws the pin 19, and initial movement of this pin closes the switch 26. To allow the parachute pack to open a normally closed switch 25 is opened, flow of current ceases, and the plate 27 is urged from the stud 20 by the pull of elastics in the pack. In a second embodiment, Fig. 3, a stud 28 with a groove 29 is mounted on a plate 30 on an inner flap of a parachute pack, and a plate 31 on an outer flap carries a solenoid 32. The armature 37 of the electromagnet is an extension of a spring-loaded plate 36 which enters the slot 29 when the electromagnet is energized. The device operates in a similar manner to that of the first embodiment. A third embodiment, Fig. 5, shows a stabilizer comprising a lug 40 retained by a pivoted hook 43 which is held in position by a pawl 45 and the armature 47 of an electromagnet 49. In operation a pin 50 holds the armature in position until the electromagnet is energized when it is withdrawn. De-energization of the electromagnet allows pivoting of the armature 47 and the pawl 45, and rotation of hook 43 under the pull of lug 40, thus releasing the lug. In any embodiment the switch controlling flow of current to the catch may be actuated by barometric capsules, or electronic or mechanical delay mechanisms.
Patent GB-112920-A (GB)
Title: Improvements in connection with Apparatus for Aerating or Charging Gas into, Liquid in Bottles, and the like.
Inventor: HUCKS WILLIAM
IPC: B01F3/04
Filed: 1917-01-23
Abstract: 112,920. Hucks, W. Jan. 23, 1917. Counters for articles; counters actuated by pneumatic means.- Relates to apparatus for aerating or charging gas into liquid in bottles &c. of two different sizes of the kind in which two bottle-counting devices are provided, one of which is actuated by the gas pressure whenever a bottle is being charged, the other only being actuated when small bottles are being charged. According to the invention, a device is provided which cannot be moved out of the position in which it directly obstructs the movement of the spindle of the counter for small bottles when large bottles are being charged, but which can be moved into another position when small bottles are being charged. The apparatus comprises a frame A carrying the nozzle piece B through which passes the tube leading from the gas container C, the two counters F, G, and the platform E for supporting large bottles adapted to be raised by a screw D or the like. The counters F, G are each actuated by a spindle attached to a diaphragm acted upon by the gas pressure. The counter F for small bottles is prevented from being actuated when large bottles are being charged by a sector or quadrantal piece I provided with a bar I<2> which is held by a large bottle in such a position that movement of the spindle f<2> of the counter F is prevented; when a small bottle is being charged, however, the piece I can be moved so that a gap i therein comes opposite the spindle f<2>. In order that only a small movement of the screw D or the like may be necessary for positioning small bottles, a second platform H may be provided for placing on the platform E. The platform H may be separate from the frame A, or may be connected thereto by arms h attached to pivots h<2> working in slots h<3>. A catch b holds the platform H turned up out of the way when large bottles are being charged.
Patent GB-882574-A (GB)
Title: Improvements in the moulding of plastics
IPC: B29C45/46
Filed: 1960-01-13
Abstract: Thermoplastic compressible materials such as polythene, polystyrene or cellulose acetate butyrate are injection moulded by forcing the material into a storage chamber, incrementally increasing the pressure within the storage chamber by forcing in additional material until it is compressed, and periodically discharging a portion of the compressed material into a mould. Heated polythene is extruded by a screw-type apparatus into a pressure boosting means such as a small hydraulic piston which forces the material into a closed storage chamber until a pressure of 20,000 p.s.i. is reached.  An outlet valve is then opened and a shot of material comprising between one fifteenth and one sixtieth of the storage chamber volume flows into and fills the communicating mould owing to the decompressive force and the pressure in the chamber drops to a minimum of 10,000 p.s.i. The pressure on the material in the chamber may be maintained by a compressible fluid such as an inert gas, under pressure acting on a fluid tight movable wall within the chamber.
Patent GB-196083-A (GB)
Title: Improvements in or relating to apparatus for indicating ignition failures in internal combustion engines
IPC: G01L23/02
Filed: 1922-01-14
Abstract: 196,083. Fisher, S., and Preston Co., Ltd., C. P. Jan. 14, 1922. Pressure gauges, mounting-details for.-Relates to apparatus fcr indicating ignition failures in internalcombustion engines, of the kind in which an indicator is controlled by the pressure in the combustion chamber, and consists in the use of a Bowden tube or a diaphragm upon which the cylinder pressures act and which transmits them to the indicator. A bored valve-casing A, screwed for attachment to the engine cylinder is fitted with a ball non-return valve E, the movement of which is limited by a pin F. The space C may be filled with nickel gauze or other filtering material to arrest carbon particles. A flexible or other pipe G terminating, ina conical washer- H is secured to the conical bore at the end of the casing by a screw cap. A volute tube M is connected similarly to the other end of the pipe G and is also connected by a bell-crank N with an indicator P having three indications R, S, T, any one of which can be exposed in front of a glazed opening in an indicator box. The positions correspond with no compression, normal compression, and explosion pressures, the latter being exhibited when the engine is firing correctly.
Patent GB-582121-A (GB)
Title: Improvements in or relating to means for producing clouds of artificial smoke
IPC: F41H9/06
Filed: 1941-01-31
Abstract: 582,121. Smoke-producing apparatus and compositions. TRIGGS, W. W. (Herbline, C. L.). Jan. 31, 1941, No. 1315. [Class 81 (i)] A device for producing coloured artificial smoke comprises rolls or rolled-up films of highly - combustible materials such as c,ellulose acetate or used cinematograph films 5', 5' &c. embedded in organic or mineral substances 6', 6<2> &c. adapted to colour the smoke contained in a receptacle - 2 provided with a fulminate detonator, electrical device, or like means for igniting the first roll 5<1>. The colouring product 6<1>, 6<2> may be in turn embedded in a product 7 such as resin or pitch which is also converted into smoke. The product 7 may also contain afire extinguishing substance such as-hexachlorethane to inhibit the formation of flames. The device may embody an outlet tube 12 provided with a regulating valve 4. - Suitable colouring materials include Auramine OO, Rhodamine B, B base and 6G extra, Orange 2 and RR, Solid Blue B and Chrysoidine JE. A modified device comprises a container holding three receptacles 2 simultaneously providing smokes of different colours; or different colouring materials may be arranged between the successive rolls 5 thereby enabling smoke of different colours to be liberated in succession. The devices may be attached to the wings of an aeroplane or distributed around the periphery of a ship.
Patent GB-962995-A (GB)
Title: Air cushion vehicle
IPC: B60V1/16
Filed: 1963-01-11
Abstract: 962,995. Air cushion vehicles. FORD MOTOR CO. Ltd. Jan. 11, 1963 [Jan. 12, 1962; March 8, 1962; March 9, 1962], No. 1335/63. Heading B7K. An air cushion vehicle has an air retaining skirt around its base comprising a plurality of separate contiguous elongated flexible elements. In one embodiment (Fig. 3), each element has a core 16 of flexible foam material and a covering 17 of hard urethane elastomer, and is bonded to an individual channel member 18 bolted to the base 12 of the vehicle. In another embodiment, each element (seen in horizontal section in Fig. 6) is of V-section urethane, reinforced by rods 25, and has its spinal edge 24 outermost. In another embodiment (Fig. 10), each member comprises a pair of rubber triangular sections bars 29, 31 reinforced by rods 35 and bonded to a backing strip 33. In another embodiment (Figs. 12 and 13), each element is of rectangular section urethane, reinforced by rods 39, 31. Adjacent elements have their long sides adjacent, and each element is unstable in bending about its narrower neutral axis, so that in striking an obstacle it twists to present a long side to the obstacle.
Patent GB-487315-A (GB)
Title: Clock with front of ceramic, vitreous or like material
IPC: G04B37/04
Filed: 1938-01-15
Abstract: 487,315. Clock cases. JUNGHANS AKT.-GES., GEB. Jan. 15, 1938, No. 1397. Convention date, Jan. 15, 1937. [Class 139] Clocks with fronts of ceramic, vitreous, or like material are provided with means in the form of fixing lugs or grooves, integral with the front, for detachably securing the clock movement and casing. Each lug 22, Fig. 6, protrudes through an aperture in the casing 25 and is provided with a transverse hole 24 to receive a bolt 27, sufficient lateral play being left to enable the movement to be centred. In a modification, Fig. 2, each lug 2 is slotted to receive a bolt 10 which screws into an elongated nut 7 positioned in a larger cavity 6 and prevented from rotating by the casing 4. In a further modification, Fig. 8, the movement 35 is screwed to a wooden base 38 which is, in turn, secured by claw-like lugs 32 by slipping it over the lugs and then turning. In yet another modification, Fig. 12, strips of wood 54 with V-shaped notches 53, are inserted into corresponding grooves in lugs 52, the movement then being screwed to the wood. Instead of providing the V -shaped notches, the wood strips could be screwed to the lugs 52.
Patent GB-1161943-A (GB)
Title: Prilling Tower, with Floor Constructed as Fluidizing Bed for Cooling Prilled Materials
IPC: F28C3/16
Filed: 1967-01-11
Abstract: 1,161,943. Cooling granular material. BUTTNER-WERKE A.G. 11 Jan., 1967 [12 Jan., 1966], No. 1468/67. Heading F4U. The floor of a prilling tower 1 is formed to support a fluidized bed for cooling the prilled material and comprises a perforated plate 2 having a central aperture over which is disposed a perforated plate 3, and a plurality of perforated plates 5 which are disposed below plate 3 and extend between plate 2 and a discharge passage 7. Air is supplied to the plates through ducts which are subdivided by partitions 11 so that the air supplies to plates 2 and 3 can be regulated independently by dampers 12. The tower may be of circular or square cross-section and plates 5 may be rectangular, or part circular or helical.
Patent GB-347205-A (GB)
Title: Improvements in and relating to fluid supply systems
IPC: F01M1/20
Filed: 1930-01-15
Abstract: 347,205. Lubrication indicators and filters. BOWDEN WIRE, Ltd. and NISBET, A. H., Bowden Works, Victoria Road, Willesden Junction, London. Jan. 15, 1930, No. 1491. [Class 12 (iii).] In a fluid supply system, such as a lubricating system for a motor vehicle, in which is located a loaded byepass valve adapted to open at a predetermined pressure, the movement of the valve is transmitted by Bowden or like mechanism or by pneumatic means so as to operate an indicator or signal or, where the valve is arranged to byepass a filter in the event of clogging thereof, to operate or set into operation means for cleaning the filter. The valve is in the form of a plunger 1, Fig. 1, loaded by a spring 19 and subjected to the pressure at the inlet side of the filter through a passage 16b, the plunger having ports 17 adapted, when it is raised, to register with ports 18 in the valve cylinder 11 so as to allow the fluid to byepass from the passage 16b to a passage 16a connected to the outlet side of the filter. The inner member 6 of a Bowden cable is secured to a member 8 held in position by a nut 12 on a plug 9 screwed into the head 10 of the cylinder 11, while the sheath 7 is mounted in a socket 13 at the end of a spindle 12a secured to the plunger 1 and provided with a slot 14 for receiving the member 8. The other end of the sheath 7 abuts against a stop 23, Fig. 2, on the indicator and the member 6 is attached to a crank pin 22 on the axis of a disc 3 having coloured quadrants arranged behind a fixed disc 2 provided with two diametrically-opposite apertures. As the plunger 1 rises, the sheath 7 is bowed and the member 6 exerts a pull on the crank pin, rotating the disc 3. A returning spring 24 is arranged between the crank pin and the stop 23, and excess movement of the member 6 is taken up by a spring 25. Alternatively, the Bowden mechanism may be arranged to actuate, through a spring- loaded telescopic tube 30, Fig. 12, a crank 27 on a spindle 28 of the filter, whereby movement is imparted to scraper elements arranged between adjacent filter elements ; or the Bowden mechanism may be arranged to operate means for coupling the filter cleaning device to some continuously or intermittently moving part such as the clutch pedal of a motor vehicle ; or a cross-piece 31, Fig. 12, connected to the plunger 1 may be provided with sockets 32 for the sheaths 7 of two Bowden cables, one of which is connected to the indicator while the other actuates the crank 27 ; or the filter cleaning device may be operated by hand through Bowden mechanism by means of a pull knob mounted in the indicator fitting.
Patent GB-606604-A (GB)
Title: Improvements in or relating to winches
IPC: B66D5/00
Filed: 1946-01-16
Abstract: 606,604. Winches. BRITISH ENGINES, Ltd., CHRISTIAN, G. R., and LAMB, C. J. Jan. 16, 1946, No. 1527. [Class 78 (v)] In a winch the clutch lever 6 rests on the lateral lug 8 of the brake lever 5 so as to be movable therewith from the clutch disengagement to engagement position as the brake lever is moved from its braking to its release position and means (e.g. spring bolt 9) is provided for retaining the clutch lever in the engagement position as the brake lever returns to its braking position and subsequently causing the clutch lever to return to its disengagement position. Fig. 2. Brake lever 5 is coupled to bolt 9 by rod 13 which passes through an aperture in cranked lever 11, 11a to the other limb of which lever the bolt is pivoted. When clutch lever 6 rests on lug 8 of the brake lever, both in the lower position, the clutch is disengaged and the brake applied. When control rope 18 is raised, both are lifted till bolt 9 slips past projection 17 at which position the clutch is engaged and the brake released. When the rope is lowered, projection 17 retains the bolt 9 and maintains clutch engagement whilst the brake lever 5 descends and gradually applies the brake till pull on the rod 13 releases the bolt and the clutch lever 6 finally drops and disengages the clutch. The brake lever 5 has weight 7. Fig. 3. In order that the lever may be held in some intermediate neutral position so that the hoisting rope when unweighted may be pulled out, neutral lever 21 may be pivoted at 23 so as to move across the up-and-down path ,of brake lever 5. As the latter moves up it pushes past pivoted pawl 24 and may be retained there by the pawl in the neutral position. As the brake lever moves further upwards it abuts against arm 21b to swing the pawl out of the path of brake lever as it subsequently descends and to swing face 21c so as to be struck by the downwardly moving brake lever and to bring the neutral lever to its original position.
Patent GB-620451-A (GB)
Title: Improvements in and relating to screwdrivers
IPC: B25B23/10
Filed: 1947-01-17
Abstract: 620,451. Screwdrivers. JOEL, J. Jan. 17, 1947, No. 1669. [Classes 61(i) and 61(iii)] A screwdriver F has a side slip preventing sleeve H projected normally beyond the end R of the blade by a spring K located within a barrel A secured on the forward end of the screwdriver handle. The rear end of the sleeve telescopes in the end of the barrel and is serrated and expanded at Z to retain it in position. The forward end L of the sleeve is bell-mouth, axially split at M and circularly grooved at N, N<SP>1</SP> to engage the screw head Sand hold it whilst extracting or inserting. The end part T of the handle is axially rotatable relatively to the driving part E.
Patent GB-1246252-A (GB)
Title: Controlled etching without use of an etchant resist
Inventor: FRANTZEN JOHN J
IPC: H01J9/14
Filed: 1970-01-14
Abstract: 1,246,252. Etching. BUCKBEE MEARS CO. 14 Jan., 1970 [14 July, 1969], No. 1734/70. Heading B6J.  Aperture masks 9 (e.g. for use in colour television sets) are etched to enlarge the apertures to a predetermined extent without use of an etchant resist by spraying etchant on to the masks from at least one set of nozzles arranged to produce a predetermined spray pattern. The masks, e.g. of stainless steel are sprayed with dilute hydrochloric acid in station 17 to remove oxide coatings rinsed with water in station 18 and etched in four stages in station 19 with ferric chloride. The masks are advanced intermittently beneath four sets of differently arranged nozzles 60, 70, 75 and 76 all provided with flow control valves and devices to ensure that etching occurs only to a predetermined extent at each stage and that no etchant drips on to the mask after the supply of etchant has been shut off. The etched masks are rinsed with water in station 20, treated to remove carbon (with phosphonic acid) in station 23, blackened with a coating of iron phosphate at station 24, further rinsed at 25, 26 and then dried in station 27. A station 21 may be provided after or between the etching stages to cheek photoelectrically the size of the apertures. The result of this detection may be used to determine the extent of further etching required or to stop etching if the desired apertures have been produced. Sliding doors 40, Fig. la, may be provided between the various stations. The masks may be moved through the stations on conveyer chains 11 or may be supported on individual racks which are coupled together and pushed through the apparatus (Fig. 2, not shown).
Patent GB-1458190-A (GB)
Title: Packages mechanical linkage
IPC: B65D33/16
Filed: 1973-01-12
Abstract: 1458190 Closing flexible covers or bags with ties NORPAK MACHINES Ltd 14 March 1974 [12 Jan 1973] 1763/73 Headings B8C B8K In a package of the type wherein an outer flexible cover, or bag, which may be netting, forms an outer wrapping for an article, object or the like, and has at least one end which is closed by being bunched and wrapped by tie means the tie means closing the, or each, bunched end, comprises two lengths of material strip 14A, 14B wrapped around the bunched end and joined together at two seams 18, 20 to hold the end bunched and closed, at least one strip also defining a free extension by which the tie means may be pulled to fracture same at least at the seam 18 remote from the extension to remove the strip from the bunched end. The tie means 14, Fig. 2, comprises the two strips 14A, 14B of heat-sealable material which are heat-sealed at their adjacent ends to form the seams 16, 18 and at a third position 20 nearer to the seam 18 than seam 16 to form two loops 24, 22 the latter being wrapped around the bunched end of the bag and the loop 24 providing a pull tag for either breaking the seal 18 only, Fig. 3, or both seams 18, 20, Fig. 4. At least one of the seams 18, 20 is formed after the strips have been wrapped around the bunched bag end. The tie can be re-used after the seal 18 only has been broken by wrapping the tie around the bunched bag end and passing one end of the tie through the loop 24, Fig. 3A. If both of the seams are broken the tie can be tied, as a single length, with a knot around the bunched bag end, Fig. 4A. In a modification, Fig. 6, not shown, two strips (14, 14A are adhesively secured together by an end seam (18) and also along the remainder of the tie in the area between the seals 16, 20 shown in Fig. 2. The tie means may carry printed matter.
Patent GB-1403929-A (GB)
Title: Pulse generator
IPC: H02M1/08
Filed: 1973-01-12
Abstract: 1403929 Controlling converters GENERAL ELECTRIC CO 12 Jan 1973 [14 Jan 1972] 1802/73 Heading H2F A circuit for generating one or more trains of pulses at a phase angle relative to an input A.C. signal adjustable by means of a control voltage Ec comprises a bipolar active integrator 28a for shifting the phase of signal El by 90 degrees and a comparator 30a arranged to generate a pulse at each repetition of a predetermined relationship between the phase shifted A.C. signal and the control voltage Ec. The system provides trains of pulses at 22a, 22b the pulses of each train differing in phase by 180 degrees and being suitable for triggering thyristors in opposite arms of a converter bridge. Amplifier 112a acts as a zero crossing detector which changes state on each passage through zero of the combined input from integrator 28a and terminals Ec, 45b. Capacitor 122a and pulse shaper 123a provide the required output pulse on each such passage through zero. The output from integrator 28a is inverted at 55 and fed to a further zero crossing detector amplifier 112b so as to provide the second train of pulses at 22b. Clamps 44a, 44b prevent unwanted operation during the wrong half cycle. Two other sets of circuits may be employed to provide control pulses for the other four thyristors of the converter bridge.